[INFO] cloning repository https://github.com/wzp-coding/study-workspace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wzp-coding/study-workspace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzp-coding%2Fstudy-workspace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzp-coding%2Fstudy-workspace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9cc96ddddc61f36cbe49c66e9c8195c491599a1
[INFO] checking wzp-coding/study-workspace against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzp-coding%2Fstudy-workspace" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device


failed to checkout https://github.com/wzp-coding/study-workspace

Caused by:
    command failed: exit status: 1